<template>
  <div>
    <!-- 头部 -->
    <nav-header></nav-header>
    <!-- 头部 -->
    <!-- 面包屑 -->
    <nav-bread>
      <span>Carts</span>
    </nav-bread>
    <!-- 面包屑 -->
    <!-- 字体图标 -->
    <svg
      style="position: absolute; width: 0; height: 0; overflow: hidden;"
      version="1.1"
      xmlns="http://www.w3.org/2000/svg"
      xmlns:xlink="http://www.w3.org/1999/xlink"
    >
      <defs>
        <symbol id="icon-add" viewBox="0 0 32 32">
          <title>add2</title>
          <path
            class="path1"
            d="M15 17h-13.664c-0.554 0-1.002-0.446-1.002-1 0-0.552 0.452-1 1.002-1h13.664v-13.664c0-0.554 0.446-1.002 1-1.002 0.552 0 1 0.452 1 1.002v13.664h13.664c0.554 0 1.002 0.446 1.002 1 0 0.552-0.452 1-1.002 1h-13.664v13.664c0 0.554-0.446 1.002-1 1.002-0.552 0-1-0.452-1-1.002v-13.664z"
          ></path>
        </symbol>
        <symbol id="icon-ok" viewBox="0 0 32 32">
          <title>ok</title>
          <path
            class="path1"
            d="M31.020 0.438c-0.512-0.363-1.135-0.507-1.757-0.406s-1.166 0.435-1.529 0.937l-17.965 24.679-5.753-5.67c-0.445-0.438-1.035-0.679-1.664-0.679s-1.219 0.241-1.664 0.679c-0.917 0.904-0.917 2.375 0 3.279l7.712 7.6c0.438 0.432 1.045 0.681 1.665 0.681l0.195-0.008c0.688-0.057 1.314-0.406 1.717-0.959l19.582-26.9c0.754-1.038 0.512-2.488-0.538-3.233z"
          ></path>
        </symbol>
        <symbol id="icon-edit" viewBox="0 0 32 32">
          <title>edit</title>
          <path
            class="path1"
            d="M28.287 8.51l-4.805-4.806 0.831-0.831c0.472-0.472 1.086-0.777 1.564-0.777 0.248 0 0.452 0.082 0.622 0.253l3.143 3.144c0.539 0.54 0.133 1.529-0.524 2.186l-0.831 0.831zM26.805 9.992l-1.138 1.138-4.805-4.806 1.138-1.138 4.805 4.806zM24.186 12.612l-14.758 14.762-4.805-4.806 14.758-14.762 4.805 4.806zM7.379 28.288l-4.892 1.224 1.223-4.894 3.669 3.67zM31.123 4.011l-3.143-3.144c-0.567-0.567-1.294-0.867-2.103-0.867-1.036 0-2.174 0.52-3.045 1.391l-20.429 20.436c-0.135 0.134-0.23 0.302-0.276 0.487l-2.095 8.385c-0.089 0.355 0.017 0.736 0.276 0.995 0.198 0.198 0.461 0.307 0.741 0.307 0.085 0 0.171-0.010 0.254-0.031l8.381-2.096c0.185-0.047 0.354-0.142 0.487-0.276l20.43-20.436c1.409-1.41 2.042-3.632 0.524-5.15v0z"
          ></path>
        </symbol>
        <symbol id="icon-del" viewBox="0 0 32 32">
          <title>delete</title>
          <path
            class="path1"
            d="M11.355 4.129v-2.065h9.29v2.065h-9.29zM6.194 29.935v-23.742h19.613v23.742h-19.613zM30.968 4.129h-8.258v-3.097c0-0.569-0.463-1.032-1.032-1.032h-11.355c-0.569 0-1.032 0.463-1.032 1.032v3.097h-8.258c-0.569 0-1.032 0.463-1.032 1.032s0.463 1.032 1.032 1.032h3.097v24.774c0 0.569 0.463 1.032 1.032 1.032h21.677c0.569 0 1.032-0.463 1.032-1.032v-24.774h3.097c0.569 0 1.032-0.463 1.032-1.032s-0.463-1.032-1.032-1.032v0z"
          ></path>
          <path
            class="path2"
            d="M10.323 9.806c-0.569 0-1.032 0.463-1.032 1.032v14.452c0 0.569 0.463 1.032 1.032 1.032s1.032-0.463 1.032-1.032v-14.452c0-0.569-0.463-1.032-1.032-1.032z"
          ></path>
          <path
            class="path3"
            d="M16 9.806c-0.569 0-1.032 0.463-1.032 1.032v14.452c0 0.569 0.463 1.032 1.032 1.032s1.032-0.463 1.032-1.032v-14.452c0-0.569-0.463-1.032-1.032-1.032z"
          ></path>
          <path
            class="path4"
            d="M21.677 9.806c-0.569 0-1.032 0.463-1.032 1.032v14.452c0 0.569 0.463 1.032 1.032 1.032s1.032-0.463 1.032-1.032v-14.452c0-0.569-0.463-1.032-1.032-1.032z"
          ></path>
        </symbol>
        <symbol id="icon-clock" viewBox="0 0 32 32">
          <title>clock</title>
          <path
            class="path1"
            fill="#605f5f"
            d="M16 29c-7.168 0-13-5.831-13-13s5.832-13 13-13c7.168 0 13 5.832 13 13s-5.832 13-13 13zM16 0c-8.822 0-16 7.178-16 16s7.178 16 16 16c8.822 0 16-7.178 16-16s-7.178-16-16-16z"
          ></path>
          <path
            class="path2"
            fill="#605f5f"
            d="M23.958 21.837l-6.958-6.489v-6.282c0-0.827-0.673-1.5-1.5-1.5s-1.5 0.673-1.5 1.5v6.934c0 0.414 0.174 0.814 0.477 1.098l7.435 6.934c0.279 0.259 0.642 0.402 1.023 0.402 0.415 0 0.814-0.174 1.096-0.477 0.564-0.605 0.532-1.555-0.073-2.12z"
          ></path>
        </symbol>
      </defs>
    </svg>
    <!-- 字体图标 -->

    <!-- 购物车列表 -->
    <div class="container">
      <div class="cart">
        <div class="page-title-normal">
          <h2 class="page-title-h2"><span>My Cart</span></h2>
        </div>
        <div class="item-list-wrap">
          <div class="cart-item">
            <div class="cart-item-head">
              <ul>
                <li>Items</li>
                <li>Price</li>
                <li>Quantity</li>
                <li>Subtotal</li>
                <li>Edit</li>
              </ul>
            </div>
            <ul class="cart-item-list">
              <li v-for="(item, index) in cartList" :key="item.productId">
                <div class="cart-tab-1">
                  <div class="cart-item-check">
                    <a
                      href="javascipt:;"
                      class="checkbox-btn item-check-btn"
                      :class="{ check: item.checked == '1' }"
                      @click="editCart('checked', item)"
                    >
                      <svg class="icon icon-ok">
                        <use xlink:href="#icon-ok"></use>
                      </svg>
                    </a>
                  </div>
                  <div class="cart-item-pic">
                    <img :src="require('../../static/' + item.productImage)" />
                  </div>
                  <div class="cart-item-title">
                    <div class="item-name">{{ item.productName }}</div>
                  </div>
                </div>
                <div class="cart-tab-2">
                  <div class="item-price">
                    {{ item.salePrice | currency('￥') }}
                  </div>
                </div>
                <div class="cart-tab-3">
                  <div class="item-quantity">
                    <div class="select-self select-self-open">
                      <div class="select-self-area">
                        <a class="input-sub" @click="editCart('sub', item)"
                          >-</a
                        >
                        <input
                          type="text"
                          v-model.lazy="item.productNum"
                          class="proNum"
                          @change="inputValue(item)"
                        />
                        <a
                          class="input-add"
                          style="margin-left:66px;"
                          @click="editCart('add', item)"
                          >+</a
                        >
                      </div>
                    </div>
                  </div>
                </div>
                <div class="cart-tab-4">
                  <div class="item-price-total">
                    {{ (item.productNum * item.salePrice) | currency('￥') }}
                  </div>
                </div>
                <div class="cart-tab-5">
                  <div class="cart-item-opration">
                    <a
                      href="javascript:;"
                      class="item-edit-btn"
                      @click="removeGood(index, item.productId)"
                    >
                      <svg class="icon icon-del">
                        <use xlink:href="#icon-del"></use>
                      </svg>
                    </a>
                  </div>
                </div>
              </li>
            </ul>
          </div>
        </div>
        <div class="cart-foot-wrap">
          <div class="cart-foot-inner">
            <div class="cart-foot-l">
              <div class="item-all-check">
                <a href="javascipt:;" @click="toggleCheckAll">
                  <span
                    class="checkbox-btn item-check-btn"
                    :class="{ check: selectAll }"
                  >
                    <svg class="icon icon-ok">
                      <use xlink:href="#icon-ok" />
                    </svg>
                  </span>
                  <span>Select all</span>
                </a>
              </div>
            </div>
            <div class="cart-foot-r">
              <div class="item-total">
                Item total:
                <span class="total-price">{{
                  totalPrice | currency('￥')
                }}</span>
              </div>
              <div class="btn-wrap">
                <a
                  class="btn btn--red"
                  :class="{ 'btn--dis': checkGoogCount == 0 }"
                  @click="checkOut"
                  >Checkout</a
                >
              </div>
            </div>
          </div>
        </div>
      </div>
    </div>
    <!-- 删除商品确认模态框 -->
    <Model v-bind:mdShow="removeConfirm" v-on:close="closeConfirm">
      <p slot="message">你确定要删除该商品吗？</p>
      <div slot="btnGroup">
        <a href="javascript:;" class="btn btn--m" @click="sureRemove">确定</a>
        <a href="javascript:;" class="btn btn--m btn--red" @click="think"
          >再想想!</a
        >
      </div>
    </Model>
    <!-- 底部 -->
    <nav-footer></nav-footer>
  </div>
</template>
<style>
.input-sub,
.input-add {
  min-width: 40px;
  height: 100%;
  border: 0;
  color: #605f5f;
  text-align: center;
  font-size: 16px;
  overflow: hidden;
  display: inline-block;
  background: #f0f0f0;
}
.item-quantity .select-self-area {
  background: none;
  border: 1px solid #f0f0f0;
}
.item-quantity .select-self-area .select-ipt {
  display: inline-block;
  padding: 0 3px;
  width: 30px;
  min-width: 30px;
  text-align: center;
}
</style>
<script>
import NavHeader from '../components/NavHeader'
import NavBread from '../components/NavBread'
import NavFooter from './../components/NavFooter.vue'
import Model from '../components/Modal'
import qs from 'qs'
import { mapState, mapMutations } from 'vuex'
export default {
  data() {
    return {
      //购物车列表
      cartList: [],
      //获取cookie中的userId
      userId: '',
      //控制删除商品模态框的显示与隐藏
      removeConfirm: false,
      //存储要删除商品的索引
      index: 0,
      //存储删除商品的id
      productId: '',
      //购物车商品数量
      goodsNum: 0
    }
  },
  created() {
    //获取购物车列表
    this.getCartList()
    //计算购物车的商品数量
    // this.countCartNum(this.cartList.length)
  },
  methods: {
    // ...mapMutations(['countCartNum']),
    //获取购物车列表
    getCartList() {
      //获取cookie中的useId
      this.userId = this.$cookies.get('userId')
      //判断用户id
      if (this.userId) {
        //用户id存在
        this.$axios
          .get('/carts/getCarts', {
            params: {
              userId: this.userId
            }
          })
          .then(res => {
            // console.log(res);
            this.cartList = res.data.cartList
            this.goodsNum = res.data.goodsNum
            this.$store.commit('countCartNum', this.goodsNum)
          })
          .catch(err => console.log(err))
      }
    },
    //修改商品状态属性
    editCart(val, item) {
      if (val == 'sub') {
        //数量减操作
        //判断当前数量
        if (item.productNum <= 1) {
          this.$message.info('商品数量不能小于1')
          //阻止程序向下执行
          return
        }
        item.productNum--
      } else if (val == 'add') {
        //数量增加操作
        item.productNum++
      } else if (val == 'checked') {
        //勾选操作
        item.checked = item.checked == '0' ? '1' : '0'
      }

      this.$axios
        .post(
          '/carts/editCarts',
          qs.stringify({
            userId: this.userId,
            productId: item.productId,
            productNum: item.productNum,
            checked: item.checked
          })
        )
        .then(res => {
          // console.log(res)
          //重新获取商品列表
          this.getCartList()
        })
        .catch(err => console.log(err))
    },
    //删除购物车中的商品
    removeGood(index, id) {
      //显示删除模态框
      this.removeConfirm = true
      //存储要删除商品的索引
      this.index = index
      this.productId = id
    },
    //关闭模态框
    closeConfirm() {
      this.removeConfirm = false
    },
    //点击再想想按钮触发
    think() {
      this.removeConfirm = false
      this.$message.info('这个商品很不错啦，价格也实惠呢！')
    },
    //点击确定按钮触发
    sureRemove() {
      //根据用户id和索引发送axios请求
      this.$axios
        .post(
          '/carts/deleteGood',
          qs.stringify({
            userId: this.userId,
            index: this.index,
            productId: this.productId
          })
        )
        .then(res => {
          //隐藏模态框
          this.removeConfirm = false
          this.$message.success(res.msg)
          //重新获取商品列表
          this.getCartList()
        })
        .catch(err => console.log(err))
    },
    //商品输入框发送变化时触发
    inputValue(item) {
      if (item.productNum <= 0) {
        this.$message.error('商品数量不能小于1哦亲!')
        //让item.productNum等于1
        item.productNum = 1
      }
      //调用修改商品属性方法
      this.editCart('', item)
    },
    //点击全选触发
    toggleCheckAll() {
      let flag = !this.selectAll
      this.cartList.forEach(item => {
        //如果selectAll为true，上面的复选框全部处于选中状态，否则相反
        item.checked = flag ? '1' : '0'
        //每一次修改调用一下编辑购物车方法，把对应的操作保存到数据库
        //遍历商品列表，判断check是否都为1，只要有一个不为1就把selectAll变为false
        this.editCart('', item)
      })
    },
    //下单checkOut
    checkOut() {
      //判断是否有选中的商品
      if (this.checkGoogCount === 0) {
        //没有选择商品阻止跳转
        this.$message.error('请选择需要结算的商品!')
        return
      }
      //判断cookie中有没有用户名和id
      const userName = this.$cookies.get('userName')
      if (this.userId && userName) {
        //跳转下单地址页面
        this.$router.push('/address')
        this.$message.success('请选择送货地址!')
      } else {
        //用户未登录，跳转商品列表页
        this.$router.push('/goodList')
        this.$message.error('请确认登陆状态!')
      }
    }
  },
  computed: {
    //全选复选框
    selectAll() {
      //如果选中的数量和购物车中商品的数量相等证明处于全选状态
      if (this.cartList.length === 0) {
        return false
      }
      return this.checkGoogCount === this.cartList.length
    },
    //计算选中商品的数量
    checkGoogCount() {
      let i = 0
      this.cartList.forEach(item => {
        //如果选中，i自增1
        if (item.checked == '1') i++
      })
      return i
    },
    //计算总价
    totalPrice() {
      let sum = 0
      this.cartList.forEach(item => {
        //如果选中，i自增1
        if (item.checked == '1') {
          sum += parseFloat(item.salePrice) * parseInt(item.productNum)
        }
      })
      return sum
    },
    ...mapState(['countCart'])
  },
  //注册组件
  components: {
    NavHeader,
    NavBread,
    NavFooter,
    Model
  }
}
</script>
